PIERRE  DUVINAGE 


OF 


SPIRAL,  STAIRS 

IRON  WORK 

FOR  BUILDINGS 


Pierre  Duvinage 

253  BROADWAY 
NEW  YORK 

ESTABLISHED  1891 


Pierre  Duvinage 

Makes 

SPIRAL  STAIRS 

Post  Caps,  Wall  Plates, 

Pier  Plates  and  Brackets, 

Roof  Truss  Castings  and  Rods, 

Trussed  Girder  Rods  and  Struts, 
Special  Castings. 

Cast  Iron  Columns,  Bases  and  Plates, 

Wheel  Guards,  and  Jamb  Guards, 

Saddles,  Sills,  Shutter  Eyes, 

Cast  Iron  Clean-Out  Doors, 

Trap  Pit  Covers. 

Steel  Beams,  Channels,  Angles,  T’s, 

Steel  Columns,  Girders,  Trusses, 

Wrought  Iron  Fire  Escapes,  Balconies, 
Railings,  Fences,  Pipe  Railing. 

Window  Guards,  Area  Gratings, 

Wire  Guards  for  Windows  and  Doors, 

Sheet  Metal  Shutters,  Doors, 

Ornamental  Iron  Work. 

Cast  Iron  and  Steel  Stairs, 

Special  Fittings  for  Sewage  Disposal  Works, 
Water  Works,  Power  Plants, 

Revolving  Domes  for  Astronomical  Observatories, 
And  all  kinds  of  Iron  and  Steel  Work 
Required  for  Buidlings. 

Prices  on  Application. 


PIERRE  DUVINAGE,  253  Broadway,  New  York 


DUVINAGE  SPIRAL  STAIRS 

Patented  Feb.  13,  1917. 


DUVINAGE  SPIRAL  STAIRS  have  been  erected 
and  approved  for  their  simple,  durable  construction,  as 
well  as  their  economy  in  floor  space;  in  offices,  stores, 
mezzanines,  theaters,  boiler  rooms,  sewage  disposal 
pumping  wells,  power  plants,  gas  houses,  water  towers, 
moving  picture  theaters,  and  may  be  used  in  any  place 
where  floor  space  is  limited  and  easy  access  from  floor  to 
floor  is  required.  A  48"  diameter  stair  occupies  less  than 
12.5  square  feet  while  a  straight  stair  of  similar  propor¬ 
tions  would  occupy  44  square  feet. 

PIERRE  DUVINAGE,  253  Broadway,  New  York 


The  regular  stock  treads  of  DUVINAGE  SPIRAL 
STAIRS  are  correctly  designed  on  the  cantilever  prin¬ 
ciple  and  so  made  that  they  can  be  used  either  right  or 
left  hand  (cut  shows  right  hand)  and  twelve  or  sixteen 
treads  to  the  circle. 

By  calculating  the  number  of  risers  required  allow¬ 
ing  8"  to  8)4"  for  each  riser,  the  relative  positions  of 
starting  and  landing  points  are  determined  so  as  to 
decide  whether  a  right  or  left  hand  stair  would  be  best 
suited.  v 

STANDARD  SIZES 

Treads  to  Price  per  foot 


Diam.  the  circle  in  height 

72"  .  12  16  . 

66"  .  12  16  . 

60"  .  12  16  . 

54"  .  12  16  . 

48"  .  12  16  . 

*42"  .  12  . 


*  This  size  is  manufactured  but  not  recommended  as 
it  is  too  narrow  to  easily  pass  up  and  down. 

The  60"  diameter  being  the  best  to  use  where  space 
is  not  essential. 

The  DUVINAGE  PATENTED  SPIRAL  STAIRS 
are  made  of  the  best  grade  of  iron,  diamond  surface 
treads,  no  risers,  single  1"  pipe  handrail  and  uprights  on 
stairs  and  around  well. 

The  center  pipe  over  which  the  treads  are  slipped  is 
3"  or  4"  according  to  diameter  and  height  of  stairs. 
Each  stair  is  assembled  complete  at  the  shop,  given  one 
shop  coat  of  the  best  metallic  paint,  each  piece  marked 
and  then  knocked  down  for  shipment ;  this  arrangement 
makes  the  erection  at  the  site  very  simple.  Two  men 
can  erect  a  10'  to  12'  high  DUVINAGE  SPIRAL  STAIR 
in  less  than  one  half  day. 

A  wrench  and  a  screw  driver  are  the  only  tools  re¬ 
quired. 

Prices  on  application.  Give  diameter,  height  from 
floor  to  floor  and  if  possible  starting  point  and  position 
of  landing  desired  so  that  drawing  may  be  submitted 
with  estimate. 

PIERRE  DUVINAGE,  253  Broadway,  New  York 


2 


Plain  and  Ornamental  Stairs,  straight  or  spiral,  will 
be  designed  and  manufactured  to  suit  requirements. 
Correspondence  solicited. 

INSTRUCTIONS  FOR  ERECTION 

Erect  the  center  pipe  fastening  the  bottom  flange  to 
the  floor.  Tread  marked  No.  1  will  then  be  slipped  over 
the  center  pipe,  place  in  correct  position  as  shown  on 
drawing  which  is  furnished  with  each  stair  shipped  out, 
and  secure  in  position  with  set  screw  in  hub,  proceed  in 
the  same  manner  with  treads  marked  No.  2,  No.  3,  No.  4, 
etc.,  until  all  the  treads  are  in  place.  The  platform  is 
then  slipped  over  the  center  pipe  and  the  edge  of  the 
platform  fastened  to  the  floor  which  secures  the  stair. 

Pipe  Handrail — Take  the  upright  No.  1  and  fasten 
the  flange  to  the  bottom  tread  with  the  two  bolts  as 
shown  on  drawing,  then  fasten  the  curved  pipe  handrail 
to  this  upright  and  slip  the  other  uprights  over  the  hand¬ 
rail  fastening  the  uprights  to  the  proper  tread  which  is 
usually  every  third  tread.  The  upper  upright  is  slipped 
over  the  end  of  the  pipe  and  fastened  to  the  platform. 
Next  erect  the  1"  pipe  at  the  hub  of  the  platform  and  the 
rest  of  the  railing  being  screwed  together  as  shown. 

After  the  stair  is  all  erected  would  advise  going  over 
all  the  set  screws  on  the  hub  of  treads  to  make  sure  that 
each  tread  is  securely  fastened  in  its  proper  position. 

COPY  FOR  ARCHITECTS  TO  INSERT  IN 
SPECIFICATIONS 

DUVINAGE  PATENTED  SPIRAL  STAIRS— 

Furnish  and  erect  where  shown  on  plans  Duvinage 
Spiral  Stairs  as  manufactured  by  Pierre  Duvinage, 
253  Broadway,  New  York  City,  —  diameter,  —  height, 
cast  iron  treads,  center  pipe  3"  diameter  for  42",  48", 
and  54",  4"  diameter  for  60",  66",  and  72".  1"  Pipe 

handrail  on  stairs  and  around  well  opening. 


PIERRE  DUVINAGE,  253  Broadway,  New  York 


3 


DUVIN  AGE 
SPIRAL  STAIR, 
54"  diam.,  12'  3 
high,  erected  in 
office  of  Carson, 
Pirie  Scott  Co., 
410  4th  Avenue, 
New  York  City. 
Upper  cut  shows 
arrangement  of 
winding  railing  on 
16th  floor;  lower 
cut  shows  stair  as 
seen  on  the  15th 
floor. 

Note  the  neat 
substantial  con¬ 
struction,  also 
small  floor  space 
required. 


PIERRE  DUVINAGE,  253  Broadway,  New  York 


4 


DUVINAGE  SPIRAL  STAIRS  have  been  installed  as 

follows : 

Architect,  Contractor 

or  Owner  Location 

Aetna  Iron  Works . Fifth  Ave.  Drug  Store,  Brooklyn,  N.  Y. 

R.  B.  Barnes. Dr.  Raymond’s  Residence,  Washington  Depot,  Conn. 

A.  T.  Brook . Southern  Cotton  Oil  Bldg.,  Bayonne,  N.  J. 

Carson  Pirie  Scott  Co . Office  410  4th  Ave.,  New  York  City 

City  of  New  York . ' . Sanitarium,  Otisville,  N.  Y. 

H.  S.  Congers . Warehouse,  Bermuda 

Consolidated  Gas  Co.. Boiler  Room  of  Gas  House,  Highbridge,  N.Y. 

Dixon  Building  Co . Grant’s  Store,  Brooklyn,  N.  Y. 

Gust.  Ericsson . Sterling  Piano  Co.’s  Bldg.,  Brooklyn,  N.  Y. 

Wm.  Flanagan . Store  367  Flatbush  Ave.,  Brooklyn,  N.  Y. 

Wm.  Flanagan . Office  450  Pearl  St.,  New  York  City 

Foundation  Co . Sewage  Disposal  Plant,  Albany,  N.  Y. 

Foundation  Co... . Vacuum  Oil  Co.’s  Bldg.,  Paulsboro,  N.  J. 

Friedman  Iron  Works.. 116th  St.  &  Lex’ton  Ave.,  New  York  City 
Howard  Greenley.Sec’y’s  Office  of  Archt.  League,  New  York  City 

W.  E.  Green  &  Co . Stable,  Glen  Cove,  N.  Y. 

John  C.  Greenleaf . Farm  Bldgs.,  Water  Tower,  Lee,  Mass. 

Grossman  Bros.  &  Rosenbaum.  .St.  Anthony’s  Gym.,  B’klyn,  N.  Y. 

Glenham  Construction  Co . Pump  House,  Glenham,  N.  Y. 

J.  H.  Grozier  Co. ...  Whiting  Mfg.  Co.’s  Factory,  Hartford,  Conn. 

D.  S.  Fless  &  Co . Office  Bldg.  25  Broad  St.,  New  York  City 

D.  S.  Hess  &  Co . Office  Bldg.  3  E.  40th  St.,  New  York  City 

D.  Horsley . Moving  Picture  Studio,  Bayonne,  N.  J. 

F.  D.  Hyde . Signal  Sta.  D.  L.  &  W.  R.R.,  Buffalo,  N.  Y. 

Jersey  Construction  Co . 253  6th  Ave.  Store,  New  York  City 

Jas.  H.  S.  Jones . Wolff  Shirt  Store,  Bridgeport,  Conn. 

Katchen  Iron  Works . 125th  Street  Theatre,  New  York  City 

W.  I.  Lawson . Garage,  Glen  Cove,  N.  Y. 

Lehigh  Valley  Railroad  Co. ...Pier  44  East  River,  New  York  City 

Meigs  &  Co . Store,  Bridgeport,  Conn. 

J.  Monk  &  Sons . Pier  36  North  River,  New  York  City 

McICeever  Bros . 3  Stairs  Fertilizer  Plant,  Tuckerton,  N.  J. 

Pierson  &  Goodrich . Residence  9  E.  67th  St.,  New  York  City 

Portchester  Baking  Co.  .Bakery,  3  Stories  High,  Portchester,  N.Y. 
Ruggles-Robinson  Co..U.S.  Army  Storage  Bldg.,  Mill  Rock,  N.  Y. 

Sterling  Products  Co . Factory,  Easton,  Pa. 

Robert  Schnaier . Greek  Church,  72nd  St.,  New  York  City 

II.  Wales  Lines  Co . Crane  Factory,  Bridgeport  Conn. 

H.  Wales  Lines  Co . Yale  &  Towne’s  Factory,  Stamford,  Conn. 

PIERRE  DUVINAGE,  253  Broadway,  New  York 


5 


SPIRAL  STAIRS  in  Power  House 

Vacuum  Oil  Co.,  Pauisboro,  N.  J. 
Foundation  Co.  of  N.  Y.,  General  Contractors 


PIERRE  DUVINAGE,  253  Broadway,  New  York 


6 


STAIR  DETAILS. 


7 


HIGH  CLASS  ORNAMENTAL 
RAILINGS 


Railing  for  residence  at  Lake  George. 

Mr.  Frank  C.  Farley,  Architect, 

New  York  City. 

PIERRE  DUV1NAGE, 

253  Broadway,  New  York 


8 


ANCHORING  OF  BUILDINGS 


THE  prominent  advantages  of  DUVINAGE’S  system 
of  POST  CAPS  and  WALL  PLATES  for  SELF  RE¬ 
LEASING  BEAMS,  tying  the  outer  walls  of  Brick  Buildings 
and  Framed  Structures  are:  that  in  case  of  burning  through 
the  floor,  the  BEAMS  RELEASE  THEMSELVES,  from  their 
fastenings  at  either  end,  and  fall  in  leaving  the  WALLS 
STANDING,  and  thereby  confining  the  heat  within,  and 
tending  to  prevent  the  fire  from  spreading  to  adjoining 
buildings. 

This  feature  recommends  itself  to  every  Owner  of  Prop¬ 
erty,  and  especially  to  Architects,  Builders,  Engineers,  and 
Fire  Insurance  Companies. 

INSURANCE  COMPANIES  SHOW  THEIR  AP¬ 
PROVAL,  BY  ALLOWING  REDUCED  RATES  ON  BUILD¬ 
INGS  IN  WHICH  THE  DCVIJiAGE  SYSTEM  IS  EM¬ 
PLOYED 

It  COSTS  NOTABLY  LESS  than  any  other  style  of 
construction.  PIERRE  DUVIMAGE  uses  a  WALL 
PLATE  of  cast  iron  of  PROPER  THICKNESS,  and  for 
the  sides  and  top  of  the  beams,  uses  the  SAME  MATERIAL 
as  that  of  the  wall. 

Instead  of  making  a  groove  across  the  timber,  by  two 
saw-cuts,  and  then  gouging  out  the  intervening  wood  to 
admit  a  rib  on  the  plate,  as  is  the  practice  of  others, 
PIERRE  DCVINAGE  uses  in  his  approved  system,  one 
or  more  PROJECTING  HUBS,  which  engage  in  holes  of 
corresponding  size  bored  into  the  beams,  thus  preventing  the 
shearing  off  of  the  anchoring  part  of  the  beam  end. 

THEREFORE,  in  fitting  beams  to  the  DUVINAGE 
Wall  Plates,  Post  Caps,  Pier  Caps,  Brackets,  Sill  Plates  and 
Roof  Truss  Castings,  ONE  TOOL  ONLY  need  be  used  or 
carried  about,  i.  e.,  an  AUGER- BIT  OF  PROPER  SIZE  AND 
BORE,  which,  with  about  a  half  a  dozen  turns  will  give  the 
requisite  depth  of  the  hole  needed.  A  MAN  CAN  BORE  A 
DOZEN  HOLES  IN  THE  SAME  TIME  THAT  HE  CAN 
MAKE  A  GROOVE. 

PIERRE  DUVINAGE, 


253  Broadway,  New  York 


PRICE  LIST 

OF 

DUVINAGE 

POST 

CAPS. 

Size  of  Post 

Roof 

%" 

i" 

i  y*" 

1%" 

6  inch  squares, 

$1.20 

$1.70 

8  “ 

2.45 

5.00 

9  “ 

2.75 

5.70 

$8.20 

10  “  “ 

3.20 

6.10 

8.35 

$9.20 

11  “  “ 

3.40 

$6.70 

9.00 

10.00 

12  “  “ 

3.60 

8.35 

9.25 

10.85 

13  “ 

9.20 

10.00 

11.70 

14  “ 

10.00 

11.70 

13.35 

15  “ 

12.10 

13.75 

15.45 

16  “  “ 

13.35 

15.45 

17.10 

17  “ 

14.60 

18.35 

19.60 

18  “  “ 

15.20 

20.00 

20.70 

PIERRE  DUVINAGE  makes  Bifurcated,  Triple,  Quad 
ruple  Caps,  Etc.,  calculated  for  loads  from  75  lbs.  to  500  lbs.  per 
square  foot  and  length  of  span. 


PRICES  ON  APPLICATION. 


DUVINAGE  POST  CAPS. 


FOR  SELF-RELEASING  BEAMS. 


QUADRUPLE 


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PIERRE  DUVINAGE, 

253  Broadway,  New  York 


10 


THIS  METHOD  AS  EVERY  ONE  CAN  PLAINLY  SEE, 
NOT  ONLY  MAKES  AN  IMMENSE  GAIN  IN 
STRENGTH,  BUT  ALSO  A  LARGE  SAVING  IN  CAR¬ 
PENTER’S  LABOR. 

A  DUVINAGE  Wall  plate  is  an  Anchor  and  Bearing 
Block  combined,  and  requires  no  Blue  Stone  or  Granite 
in  the  wall. 

PIERRE  DUVINAGE  is  prepared  to  supply  castings 
for  any  size  of  Post,  Pier,  Girder,  Bracket,  Sill  Plate  or  Roof 
Truss,  either  from  regular  patterns  on  hand  or  from  designs 
furnished  by  the  Architect. 


PRICE  LIST  OF  DUVINAGE  SINGLE  ANCHOR 
WALL  PLATES. 

9  in.  deep  13  in.  deep 


Beams  4  in.  wide,  east  iron .  .45 

“  5  “  “  “  60 

“  6  “  “  “  95 

“  8  “  “  “  1.10  and  1.25 

“  9  “  “  “  1.25  “  1.50 

“  10  “  “  “  1.45  “  1.95 

“  12  “  “  “  1.95  “  2.25 

“  14  “  “  “  2.20  “  2.75 

“  16  “  “  “  2.50  “  3.35 

“  18  “  “  “  2.85  “  3.60 


PIERRE  DUVINAQE  also  makes  Double  Anchor 
Plates  for  party  or  fire-walls. 


PIERRE  DUVINAGE, 

253  Broadway,  New  York 


11 


DUVINAGE 

CAST  IRON  BASE  PLATES 


r777y/MV/fy///W7777T* 

PRICE  LIST. 


Size  of  Plate 

Post 

Weight 

Price 

12 

in.  x  12  in.  x 

1 

in. 

6  in.  sq. 

40 

$2.00 

16 

“  x  16  “  x 

m 

“ 

8  “  “ 

85 

4.25 

18 

“  x  18  “  x 

I'A 

“ 

9  “  “ 

125 

6.25 

20 

“  x  20  “  x 

i/2 

u 

10  “  “ 

160 

8.00 

24 

“  x  24  “  x 

1/2 

u 

12  “  “ 

225 

11.25 

30 

“  x  30  “  x 

m 

“ 

14  “  “ 

410 

20.50 

36 

“  x  36  “  x 

2 

it 

16  “  “ 

675 

33.75 

I  AM  FURNISHING 

Special  Castings, 

Lally  or  Concrete  Filled  Columns, 

Rolling  Steel  Shutters, 

Stable  Fixtures, 

Reinforcing  Concrete  Bars, 

Special  Wrought  Iron  Hinges. 


PIERRE  DUVINAGE, 


253  Broadway,  New  York 


12 


ANCHOR  PLATE  FOR  SELF-RELEASTNG  GIRDER. 


18 


Roof  Truss  Castings. 

RODS,  BOLTS  AND  WASHERS  FOR  ANY  PITCH 
R  EQU  I  RED. 

Especially  Adapted  for  Frame  Structures,  such  as  Country 
Houses,  Hotels,  Churches,  Warehouses,  R.  R.  Depots, 
Car=Houses,  Garages,  Stables,  Etc. 

THEY  ARE  NEATLY  AND  STRONGLY  FRAMED. 

THE  ENDS  OF  THE  TIMBERS  ARE  CUT  SQUARE 
AND  NOT  WEAKENED  BY  MORTISES.  ::  :: 

THIS  IMPROVEMENT  SAVES  MUCH  CARPENTER'S 
LABOR  AND  CONSEQUENT  COST. 

If  Architects  or  others  will  send  drawings  of  what 
they  want,  with  dimensions  marked  in ,  estimates  will  be 
furnished  for  any  size  of  Truss  Castings,  Rods,  Rolts 
and  Washers  ;  and  any  other  information  regarding 
these  specialties  will  be  given. 

Contractors,  Carpenters,  Masons  or  others,  may  or¬ 
der  the  required  Castings,  Rods,  Bolts,  and  Washers 
from  us  direct. 

PIERRE  DUVINAGE, 

253  Broadway,  New  York 


14 


ROOF  TRUSSES 


Combination  wood,  cast  iron  fittings,  steel 
rods  and  pins. 


Steel  trusses  for  power  plant,  halls  and 
other  buildings  requiring  clear 
floor  space. 


PIERRE  DUVINAGE, 

253  Broadway,  New  York 


16 


CAMBERED  GIRDERS. 


WASHER. 

WASHER. 

M 

CAST  'R0N\" 

DUVINACE  ^^=====55^  STRUT! 

WALL  PLATE  \ 

/  ^  DUVINAGE^ 

POST  CAP 

Wood  girders  of  long  span  and  heavily  loaded  strengthened 
by  iron  or  steel  as  shown  above. 

In  Fig.  2  let  W  represent  the  load  concentrated  at  D.  The 
stress  in  the  member  DC  is  equal  to  W.  The  stress  in  the  other 
members  may  be  found  by  applying  the  formulas. 

Stress  DC  =  +  W 

AC  W 

Stress  AC  or  BC  = - X  — 

DC  2 

AD  W 

Stress  AB  =r  +  - X  • — ■ 

DC  2 

The  +  and  —  signs  in  the  formulas  indicate  compression 
and  tension  respectively,  and  in  Fig.  2  and  4  the  solid  lines  rep¬ 
resent  compression  and  the  dotted  lines  tension. 

In  designing  let  W  =  %  the  entire  load  on  the  girder,  and 
in  above  if  the  load  is  2,000  lbs.  per  running  foot  then  18  ft.  0 
ins.  X  2,000  =  36,000  lbs.  entire  load;  %  of  36,000  =  22,500  lhs. 
the  load  W  acting  on  the  beam  over  the  strut  DC. 

The  tension  in  the  rod  AC  is  equal  to  the  length  AC  -4-  DC 
multiplied  by  one-half  of  W  or  substituting  the  given  dimensions 
9  ft.  4  ins.  -4-  2  ft.  6  ins.  =  3.73  X  (%  of  22,500)  =  41,963  lbs. 
the  tensile  stress  in  rod  AC,  and  taking  the  ultimate  tensile 
strength  of  wrought  iron  at  50,000  lbs.  per  sq.  in.  using  a  factor 
of  safety  of  4,  we  have  50,000  -4-  4  =  12,500  lbs.  per  sq.  in.,  then 
taking  the  tensile  stress  in  rod  AC  41,963  lbs.  -4-  12,500  —  3.35  sq. 
in.  The  area  of  a  2%  in.  round  rod  is  3.54,  the  nearest  standard 
size  having  the  required  sectional  area.  As  the  area  at  the  bottom 
of  the  thread  is  less  than  area  required,  it  is  necessary  to  upset  the 
threaded  portion  of  the  rod  and  the  standard  upset  for  2%  in.  is 

inslpjie  was]iers  at  A  &  B  are  usually  made  the  full  width  of 
the  girder  and  %  to  1  in.  in  thickness. 

PIERRE  DUVINAGE, 

253  Broadway,  New  York 


16 


CAMBERED  GIRDERS 


In  Fig.  4  the  calculations  for  the  stresses  in  the  various 
members  are  similar  to  those  given  for  the  trussed  beam  with 
one  support,  and  may  be  expressed  in  formulas:  . 


Stress  BHorCE=  +  W 
AH 

“  AH  or  DE  =  —  - - -  X  W 

BH 

AB 

“  HE  = - -  X  W 

BH 

AB 

“AD  =  -1 - X  W 

BH 

In  practice  W  —  11/30  of  entire  load,  and  in  above,  if  the 
load  is  2,000  lbs.  per  running  foot,  then  18  ft.  0  ins.  X  2,000  = 
36,000  lbs.  entire  load;  11/30  of  36,000  =  13,200  lbs.  the  load  W 
acting  on  the  beam  over  the  strut  BH  and  CE  and  applying  the 
above  formula,  we  have 

6  5/12 

Stress  AH  =  -  X  13,200  =  33,924, 

2.5 

the  stress  in  rod  AH  and  33,924  -f-  12,500  =  2.713  sq.  in.,  area  of 
rod.  The  area  of  1%  in.  rod  is  2.76  sq.  in.,  the  nearest  standard 
size  having  the  required  area,  and  the  threaded  portion  should  be 
upset  to  2%  inches. 

Cambered  girders  are  made  with  one  rod  in  center  of  wood 
beams  or  with  2  rods  on  outside  of  beam  as  may  be  required. 

PIERRE  DUVINAGE  IS  PREPARED  TO  SUPPLY 
THE  RODS,  WASHERS,  DUVINAGE  CAST  IRON  STRUTS, 
WALL  PLATES  AND  POST  CAPS  FOR  ANY  SIZES 
REOUIRED  AT  REASONABLE  PRICES  FOR  THE  BEST 
MATERIALS  AND  PROMPT  DELIVERIES. 

CORRESPONDENCE  ON  THE  SUBJECT  INVITED. 

PIERRE  DUVINAGE, 

253  Broadway,  New  York 
17 


Hook  Anchors,  Side  Anchors,  Straps,  Ashlars, 
Girder  Straps  and  Wall  Plate  Anchors. 

PRICE  LIST. 


HOOK  OR  WALL  ANCHOR. 


Size  of  Iron 
Inches 

1  H 


in.  in.  in.  in.  in.  in.  in.  in.  in.  in. 

12  14  16  18  20  24  30  36  48  60 

.32  .35  .  38  .40  .42  .47  .54  .61  .85  1.00 


Size  of  Iron 
Inches 
13 4*% 


Size  of  Iron 
Inches 

1V2*% 


Size  of  Iron 
Inches 
2  M  x  % 

3x% 


SIDE  ANCHOR. 

in.  in.  in.  in.  in.  in.  in.  in.  in.  in. 

12  14  16  18  20  24  30  36  48  60 

.29  .31  .35  .37  .39  .44  .51  .58  .72  .86 


.40 


36 

.47 


in. 

m. 

30 

36 

1.11 

1.26 

1.68 

1.92 

2.10 

2.40 

24  in. 

30  in.  36  in. 

48  in 

.60 

.70  .75 

.90 

.75 

.90  1.05 

1.25 

10  in. 

12  in. 

14  in. 

.05 

.06 

.07 

.08 

.09 

.12 

A6HLARS. 

(For  Galvanized  Ashlars— Add  50%,  to  above  price.) 

PIERRE  DU  VI IV  AGE, 

253  Broadway,  New  Vor4 


18 


TIMBER  HANGERS  (Single.) 


To  avoid  mistakes,  please  give 
sizes  in  the  order  shown 
on  Cut. 

Cut  shows  6x12x4  TIMBER 
HANGER,  made  of  3  x  }  Iron 

Any  size  not  on  list  made  to 
order. 

Prices  subject  to  change  with, 
out  notice. 

Discount . 

Terms  Net  Cash. 


SIZE  OF 
HANGER 

Size 

2x% 

OF 

Iron 

2^x% 

Size 

~/'2X//2 

OF 

3x% 

Iron 

3x  8x3 . 

.60 

.75 

3x  9x3 . 

.60 

.75 

3x10x3 . 

.60 

.80 

3x12x3 . 

.67 

.90 

.83 

4x  8x3 . 

.60 

78 

.74 

4x  8x4 . 

.60 

.78 

.74 

4x  9x4 . 

.62 

.80 

.77 

1.00 

4x10x2 . 

.65 

.82 

.80 

4x10x4 . 

.65 

.82 

.80 

1.08 

4x12x2 . 

.72 

.95 

.90 

4x12x4..  .. 

.72 

.95 

.90 

1.20 

.80 

1.05 

1.00 

4x14x4 . 

.80 

1.05 

1.00 

1.30 

6x  8x3 . 

.70 

.92 

.86 

6x  8x4 . 

.70 

.92 

.86 

.70 

.92 

.86 

1  20 

.72 

.95 

.90 

1.20 

.72 

.95 

.90 

1.20 

75 

1  00 

.94 

6x10x4 . 

.75 

1.00 

.94 

1.25 

1.55 

1.90 

6x10x6 . 

.75 

1.00 

.94 

1  25 

1.55 

1.90 

.82 

1.10 

1.03 

6x12x3 . 

.82 

1.10 

1.03 

1.37 

1.65 

2.05 

6x12x4 . 

.82 

1.10 

1.03 

1.37 

1.65 

2.05 

6x12x6 . 

.82 

1.10 

1.03 

1.37 

1.65 

2.05 

HQ 

1.20 

1.12 

6x14x4 . 

.89 

1.20 

1.12 

1.50 

1.80 

2.25 

6x14x6 . 

1.20 

1.12 

1.50 

1.80 

2.25 

8x10x4 . 

1.10 

1.03 

1.43 

1.65 

2.15 

8x10x6 . 

1.10 

1.03 

1.43 

1.65 

2.15 

8x10x8 . 

1.10 

1.03 

1.43 

1.65 

2.15 

1.55 

1.85 

2.30 

1.55 

1.85 

2.30 

1.55 

1.85 

2.30 

1  65 

2.00 

2.45 

8x14x6 . 

1.65 

2.00 

2.45 

8x14x8 . 

1.65 

2.00 

2.45 

PIERRE  mrVIjVAGE, 


353  Broadway,  New  York 
19 


Large  stock  on  hand  ready  for  instant  shipment. 


PRICE  LIST 

No.  of  Hanger.  APPLIED  TO  JOISTS.  Price  Each. 


12  - 

2  x 

6 

2 

X. 

8 

2  x 

10 

2 

X 

12 . 

. S  30 

12£ — 

22lx 

8 

2.' 

lx 

10 

2Jx 

12., 

.  35 

13  — 

3  x 

6 

3 

X 

8 

3  x 

lo 

3 

X 

12 . 

.  40 

14  — 

4  x 

6 

4 

X 

8 

4  x 

10 

4 

X 

12 . 

.  60 

102  - 

2  x 

12 

2 

X 

14 

2  x 

10. 

.  45 

102  J- 

2ix 

12 

2  lx 

14 

2  lx 

16.. 

.  50 

103  — 

3  x 

12 

3 

X 

14 

3  x 

16.. 

.  60 

104  — 

4  x 

12 

4 

X 

14 

4  x 

16.. 

.  85 

105  — 

5  x 

10 

5 

X 

12 

5  x 

14 

5 

X 

16 . 

106  — 

6  x 

10 

6 

X 

12 

G  x 

14 

6 

X 

16 . 

. 1  10 

107  - 

7  x 

10 

7 

X 

12 

7  x 

14 

7 

X 

16 . 

. 1  30 

108  - 

8  x 

10 

8 

X 

12 

8  x 

14 

8 

X 

16 . 

. 1  50 

109  - 

9  x 

12 

9 

X 

14 

9  x 

16 

9 

X 

18 . 

110  - 

10  x 

12 

10 

X 

14 

10  x 

16 

10 

X 

18 . 

. 2  00 

112  - 

12  x 

14 

12 

X 

16 

12  x 

18 

12 

X 

20 . 

. 2  80 

114  - 

14  x 

16 

14 

X 

18 

14  x 

20. 

. 3  30 

116  - 

16  x 

18 

16 

X 

20 

16  x 

22., 

. 5  00 

PIERE  DUVINAGE, 

253  Broadway,  New  York 


20 


Burnished  and  Varnished. 


GOETZ  BOX  ANCHORS. 


MADE  OF  CAST  IRON. 


PRICE  LIST. 


Size  of 
Girder 

Size  of  Bot¬ 
tom  Plate 

Bearing 
on  Wall 

Price 

Each 

Cover, 

Extra 

6x10 

$1.90 

15 

6x12 

6  x  12 

6 

2.10 

•  15 

6x14 

2.30 

15 

8x  10 

2.20 

20 

8x12 

2.40 

20 

8x  14 

fix  14 

6 

2.65 

20 

8x16 

2.90 

20 

10  x  12 

3.55 

25 

10  x  14 

3.90 

25 

10  x  16 

7x  18 

7 

4.25 

25 

10x18 

4.60 

25 

12  x  12 

4.30 

32 

12x14 

4.70 

32 

12  x  16 

8  x  20 

8 

5.10 

32 

12x18 

5.50 

32 

14x14 

5.45 

40 

14  x  16 

5.90 

40 

14  x  18 

0x22 

9 

6.35 

40 

14x20 

6.80 

40 

16  x  16 

6.75 

50 

16x18 

10  x  24 

10 

7.25 

50 

16x20 

7.75 

50 

18  x  18 

10  x26 

10 

9.40 

65 

18x20 

10.00 

65 

PIERRE  DUVINAGE,  253  Broadway,  New  York 


21 


FIRE  ESCAPES 

Built  according  to  latest  State  and  City  laws. 


PEEKSKILL  MILITARY  ACADEMY, 

Peekskill,  N.  Y. 


PIERRE  DUVINAGE, 

253  Broadway,  New  York 


22 


CAST  IRON  COLUMNS  and  BASES. 


id 


£ 


© 


o 


O 


o 


:o 


Q 


O 


0 

o 


ga  □ 


Designed  and  cast  to  meet  all  requirements. 


Tables  of  safe  loads  for  round  and  square  columns, 
see  pages  26  and  27. 

PIERRE  DUVINAGE, 

253  Broadway,  New  York 


23 


SAFE  LOADS  UNIFORMLY  DISTRIBUTED  FOR  STEEL  “I”  BEAMS. 

(In  tons  of  2000  lbs.) 


O*  05  iO  CO  ©  NOMrHOQONiO^CO 

coidididid  tj< -di cd  cd  cd  cd  cd 


10"  I 

rO 

in 

o* 

00OMCDH 
©  O  05  GO  GO 
t-i  rH 

COOiOOiO  C*05cOrf<Oi©C©CO-^cO 
i>  cd  cd  cd  id  id  id  id  id  tt  -d 

o* 

31.5  lb. 

05t>fc'-t'»05C^C0rHl0 

THt>C005COCOrHOOCO-^ 

oscdoot^t^t^i-cdcdcd 

40  lb. 

05C0005050N1CC. 
05  GO  l>  iO  Tf  CO  <M*  t-4 

rir- iHt— IrlHrlrlr- 

CO00COO51OtHGOiOC^O5 

poddoicjxGCicoN 

rlrtn 

15"  I 

42  lb. 

rH  rH 05  CO  rf  Tj<  lO  £>.  05  C?  CO  O  tO 

cd-J<ojo05Q6cCcoiO  Tf  r*  CO  CO  C* 

CJWNOlHHHHH  rlr-iHHH 

OCOO*GO^*  rH  CO  io  05  t> 

cirtTHOO  00505050000 

■ — i  rl  t— i  i— i  tH  rH 

60  lb. 

0c00500<^'^0i.'-c0  CO  CO  GO  O  CO 
COCOOQQl>ld'^(N--H  ©  05  00  00  l> 

CO  CO  CO  c5  0*  Ot  C*  C*  C*  WHrtiHH 

CO  ©  T*<  05  Tf  05  io  rH  CO  O 

cdcdid^Tij  co  co  cd  oi  cj  ci 

t-H 

00 

55  lb. 

OiCsiCOTjtrJt^T-toqiO  ■^HrJHiOCOCO^-^oqOJi.'. 
C5  CO  CO  rH  05  CO  CO  o|r-Io05c6GOJ>c6cOlO 
CO  CO  CO  CO  Oi  O*  O*  O*  Oi  NWWrirtHHrirtH 

t>  Oi  GO 

id  ti*  tjh  cd  cd  co 

nHHrirlH 

© 

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65  lb. 

O505lOiOO5COCOG0’-'  {-■C0r-(O5O5a5H(NlON  th  ^  05 

fCOCOr^oir-i  05C0l>l0'^C0C0  0ir-5o  O  05  GO 

IOT^tFCOCOCOCOcO  (M  o5  Ci  <N  O?  C?  Ci  OJ  (M  (NHH 

CO  00  CO 

00  <  -  t- 

80  lb. 

hhcOhcOOtJIhh  (NiOOiOMOOOOJO  O?  ^  t- 
lOOtooiGOcocO’— <05  10  oi  t-h  o  go  o  cd  id  -d  cd 

co  co  io  o  tj<  ^  ^  ^  co  co  co  co  co  co  co  oi  c*  e*  o*  a  w  a 

OWN 
CO  «N  rH 
Oi  G-i  <M 

HH 

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80  lb. 

COCONQOOifilOW'f  HhCOcOHOCOhO  05  OiOH^iOt'. 
i-rHcd’HGO'd-^oocd  rfiNouoi-id^cdoJo  05  os  06  cd  »o 

t>  t>-  co  co  io  io  ©  <r  r*  ^  co  co  co  co  co  co  co  o*  ot  c*  o*  c*  a 

P.-£ 

O-t*  <D 

S  ^  fl 

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ClCO^iOcOt^OOOSO 


24 


PIERRE  DOVINAGE,  353  Broadway,  New  York. 


safe:  loads  uniformly 

DISTRIBUTED 

FOR  STEEL  “I”  BEAMS 


(In  Tons  of  2000  lbs.) 


Distance 
Between 
Supports  in 
Feet. 

8"  I 

7"  I 

6  '  I 

5"  I 

4"  I 

3"  I 

18  lb. 

15  lb. 

12.25  lb- 

9.75  lb. 

7.5  lb. 

5.5  lb. 

5 

15.1 

11.0 

7.8 

5.1 

3.1 

i.7 

6 

12.6 

9.2 

6.5 

4.3 

2.6 

1.4 

7 

10.8 

7.8 

5.5 

3.6 

2.2 

1.2 

8 

9.4 

6.9 

4.8 

3.2 

1.9 

1.1 

9 

8.4 

6.1 

4.3 

2.8 

1.7 

1.0 

10 

7.6 

5.5 

3.9 

2.6 

1.6 

0.9 

11 

6.9 

5.0 

3.5 

2.3 

1.4 

0.8 

12 

6.3 

4.6 

3.2 

2.2 

1.3 

0.7 

13 

5.8 

4.3 

3.0 

2.0 

1.2 

0.7 

14 

5.4 

3.9 

2.8 

1.8 

1.1 

0.G 

15 

5.1 

3.7 

2.6 

1.7 

1.1 

0.6 

16 

47 

3.5 

2.4 

1.6 

1.0 

0.6 

17 

4.5 

3.3 

2.3 

1.5 

0.9 

0.5 

18 

4.2 

3.1 

2.2 

1.4 

0. 

0.5 

19 

4.0 

2.9 

2.0 

1.4 

0.8 

0.5 

20 

3.8 

2.8 

1.9 

1.3 

0.8 

0.4 

21 

3.6 

2.6 

1.9 

1.3 

0.8 

0.4 

PIERRE  DCVINAGE, 

353  Broadway,  New  York 


26 


SAFE  LOADS,  IN  TONS  OF  2000  LBS.,  FOR 
HOLLOW  CYLINDRICAL  CAST  IRON  COLUMNS. 


Square  ends.  Factor  of  safety  of  8. 


Outside 

diam., 

inches 

Thick¬ 
ness  of 

inches 

Length  of  column,  in 

feet 

Wght. 
per  ft. 
of  Cols, 
lbs. 

8 

10 

12 

14 

16 

18 

20 

6 

X 

47 

41 

36 

31 

27 

24 

21 

39 

6 

l 

60 

52 

46 

40 

35 

30 

26 

49 

7 

X 

60 

54 

48 

43 

38 

34 

30 

46 

7 

l 

76 

69 

62 

55 

49 

43 

38 

60 

8 

X 

72 

67 

61 

55 

50 

45 

40 

53 

8 

1 

93 

86 

78 

71 

64 

58 

52 

69 

8 

ix 

112 

104 

94 

86 

77 

69 

62 

83 

9 

X 

85 

80 

74 

68 

62 

57 

52 

61 

9 

i 

110 

103 

95 

88 

80 

73 

67 

78 

9 

IX 

133 

125 

115 

106 

97 

89 

81 

95 

9 

i  x 

155 

145 

134 

123 

113 

103 

94 

110 

10 

i 

127 

120 

112 

105 

97 

89 

82 

88 

10 

IX 

154 

146 

136 

127 

118 

109 

100 

107 

10 

IX 

180 

170 

159 

148 

137 

127 

117 

125 

10 

1M 

203 

192 

180 

168 

155 

143 

132 

142 

11 

1 

144 

137 

129 

122 

114 

106 

100 

98 

11 

IX 

175 

167 

158 

148 

139 

129 

122 

119 

11 

IX 

204 

195 

184 

173 

161 

151 

143 

140 

11 

IX 

232 

221 

209 

197 

184 

172 

162 

159 

11 

2 

258 

246 

233 

219 

205 

191 

181 

176 

12 

1 

160 

154 

147 

139 

131 

123 

115 

108 

12 

IX 

196 

188 

180 

170 

160 

150 

141 

131 

12 

l  X 

229 

220 

210 

199 

187 

176 

165 

154 

12 

IX 

261 

251 

239 

226 

213 

201 

188 

176 

12 

2 

291 

279 

266 

252 

238 

224 

210 

196 

13 

1 

177 

170 

163 

156 

148 

140 

132 

118 

13 

IX 

216 

209 

200 

191 

181 

172 

162 

144 

13 

IX 

254 

245 

235 

224 

213 

201 

190 

169 

13 

IX 

289 

280 

268 

256 

243 

229 

217 

193 

13 

2 

324 

312 

300 

286 

272 

257 

242 

216 

14 

1 

193 

187 

180 

173 

165 

157 

149 

128 

14 

IX 

237 

229 

221 

212 

203 

193 

183 

156 

14 

IX 

278 

270 

260 

250 

239 

227 

215 

184 

14 

IX 

318 

308 

297 

285 

273 

260 

246 

210 

14 

2 

356 

345 

333 

320 

305 

291 

276 

235 

15 

1 

209 

204 

197 

190 

183 

175 

167 

137 

15 

IX 

257 

250 

242 

233 

224 

214 

205 

168 

15 

IX 

303 

295 

285 

275 

264 

253 

241 

199 

15 

IX 

347 

337 

327 

315 

302 

289 

276 

227 

15 

2 

389 

378 

366 

353 

339 

324 

309 

255 

16 

IX 

277 

270 

262 

254 

245 

235 

225 

180 

16 

IX 

327 

319 

311 

300 

290 

278 

267 

214 

16 

IX 

375 

366 

356 

344 

332 

319 

306 

245 

16 

2 

421 

411 

400 

387 

373 

368 

343 

275 

16 

2X 

465 

454 

441 

427 

412 

396 

379 

304 

PIERRE  DUVINAGE, 


253  Broadway,  New  York 

26 


SAFE  LOADS,  IN  TONS  OF  2000  LBS.,  FOR 
HOLLOW  SQUARE  CAST  IRON  COLUMNS. 


Square  Ends.  Factor  of  Safety  of  8. 


Side  of 
Column 
inches 

Thick¬ 
ness  of 
metal 
inches 

Len 

gt.h  of  column,  in  feet 

Wght. 
per  ft. 
of  Cols, 
lbs. 

8 

10 

12 

14 

16 

18 

20 

0 

X 

64 

57 

51 

45 

40 

36 

32 

49 

0 

i 

81 

73 

65 

58 

51 

45 

40 

63 

7 

X 

80 

73 

67 

61 

55 

50 

45 

59 

7 

1 

102 

94 

86 

78 

70 

63 

57 

75 

8 

X 

96 

90 

83 

77 

71 

65 

59 

68 

8 

l 

123 

116 

107 

99 

91 

83 

76 

88 

8 

IX 

149 

139 

129 

119 

110 

100 

92 

106 

9 

X 

112 

106 

100 

93 

87 

80 

74 

77 

9 

l 

144 

137 

129 

121 

112 

104 

96 

100 

9 

ix 

175 

166 

156 

146 

136 

126 

116 

121 

9 

ix 

203 

193 

182 

170 

158 

146 

135 

141 

10 

i 

160 

159 

151 

142 

134 

125 

117 

113 

10 

l  X 

201 

193 

183 

173 

163 

152 

142 

137 

10 

m 

235 

225 

214 

202 

189 

177 

166 

159 

10 

m 

266 

254 

242 

228 

215 

201 

188 

181 

11 

i 

187 

180 

172 

164 

156 

147 

138 

125 

11 

VX 

227 

219 

210 

200 

190 

179 

169 

152 

11 

l  X 

266 

256 

246 

234 

222 

209 

197 

178 

11 

m 

302 

291 

279 

266 

252 

238 

224 

202 

11 

2 

336 

324 

310 

295 

280 

264 

249 

225 

12 

1 

208 

201 

194 

186 

177 

169 

160 

138 

12 

IX 

254 

246 

237 

227 

217 

206 

196 

168 

12 

l  X 

297 

288 

278 

266 

254 

242 

229 

197 

12 

m 

338 

328 

316 

303 

289 

275 

261 

224 

12 

2 

377 

366 

352 

338 

323 

307 

291 

250 

13 

1 

228 

222 

215 

208 

199 

191 

182 

150 

13 

IX 

279 

272 

263 

254 

244 

233 

223 

184 

13 

ix 

328 

319 

309 

298 

286 

274 

261 

216 

13 

IX 

375 

365 

353 

341 

327 

313 

298 

246 

13 

2 

419 

407 

394 

380 

365 

350 

334 

275 

14 

1 

249 

243 

236 

229 

221 

213 

204 

163 

14 

IX 

305 

298 

290 

281 

271 

261 

250 

199 

14 

IX 

359 

351 

341 

330 

319 

307 

294 

234 

14 

IX 

411 

401 

390 

378 

365 

351 

336 

268 

14 

2 

460 

449 

437 

423 

408 

393 

376 

300 

15 

1 

270 

264 

258 

250 

243 

235 

226 

175 

15 

IX 

331 

324 

316 

308 

298 

288 

277 

215 

15 

IX 

390 

382 

373 

362 

351 

339 

327 

253 

15 

IX 

446 

437 

427 

415 

402 

388 

374 

289 

15 

2 

501 

490 

479 

465 

451 

436 

420 

325 

16 

IX 

357 

350 

343 

334 

325 

315 

305 

231 

16 

IX 

421 

413 

404 

394 

383 

372 

359 

272 

16 

m 

482 

474 

463 

452 

440 

426 

412 

312 

16 

2 

541 

532 

520 

507 

493 

478 

463 

350 

16 

2X 

598 

588 

575 

561 

545 

529 

511 

387 

PIERRE  DUVINAGE, 


253  Broadway,  New  York 

27 


STRENGTH  OF  WOODEN  BEAMS 


The  following  table  gives  the  safe  uniformly  distributed 
loads,  in  lbs.,  on  rectangular  wooden  beams  one  inch  thick, 
for  a  maximum  allowable  fibre  strain  of  1000  lbs.  per  sq.  in. 

For  the  different  kinds  of  wood,  ordinarily  used  in  con¬ 
struction,  the  values  given  in  the  table  are  to  be  multiplied 
by  the  following  factors:  — 

Spruce  or  White  Pine,  0  75  1  For  1.00  1  For 

White  Oak,  1.00  ^ordinary  125 -purely 

Southern  Yellow  Pine,  1.25  )  purposes.  1.50  )  static  loads. 


Depth  in  Inches. 


in 

Feet. 

6 

7 

8 

9 

10 

11 

12 

13 

14 

15 

16 

5 

6 

7 

8 

800 

670 

570 

500 

1090 

910 

780 

680 

1420 

1190 

1020 

890 

1800 

1500 

1290 

1130 

1850 

1590 

1390 

2240 

1920 

1680 

2290 

2000 

2490 

2740 

3130 

9 

440 

610 

790 

1000 

1230 

1490 

1780 

2210 

2430 

2780 

3160 

10 

400 

540 

710 

900 

1110 

1340 

1600 

1990 

2190 

2500 

2840 

11 

360 

495 

650 

820 

1010 

1220 

1450 

1810 

1990 

2270 

2590 

12 

330 

450 

590 

750 

930 

1120 

1330 

1660 

1820 

2080 

2370 

13 

310 

420 

550 

690 

860 

1030 

1230 

1530 

1690 

1930 

2200 

14 

290 

390 

510 

640 

800 

960 

1150 

1430 

1570 

1790 

2040 

15 

270 

360 

480 

600 

740 

900 

1070 

1330 

1460 

1670 

1900 

16 

250 

340 

450 

560 

700 

840 

1000 

1250 

1370 

1570 

1780 

17 

240 

320 

420 

530 

650 

790 

940 

1170 

1290 

1470 

1680 

18 

220 

300 

400 

600 

620 

750 

890 

1110 

1220 

1390 

1590 

19 

210 

290 

380 

480 

590 

710 

840 

1050 

1150 

1320 

15(0 

20 

200 

272 

360 

450 

560 

670 

800 

990 

1090 

1250 

1420 

21 

190 

260 

340 

430 

530 

640 

760 

950 

1040 

1190 

1360 

22 

180 

248 

325 

410 

510 

610 

730 

910 

1000 

1140 

1300 

23 

175 

237 

310 

390 

480 

590 

700 

870 

950 

1090 

1240 

24 

167 

228 

297 

380 

460 

560 

670 

830 

910 

1040 

1190 

25 

160 

218 

285 

360 

450 

540 

640 

800 

880 

1000 

1140 

26 

154 

210 

275 

350 

430 

520 

620 

770 

840 

960 

1100 

27 

149 

202 

265 

330 

410 

500 

590 

740 

810 

930 

1060 

28 

143 

195 

255 

315 

400 

480 

570 

710 

780 

890 

1020 

29 

138 

188 

246 

307 

380 

465 

550 

690 

750 

860 

980 

30 

134 

182 

237 

297 

370 

450 

530 

660 

730 

830 

950 

Loads  given  below  the  zig-zag  line  produce  deflections 
liable  to  crack  plastered  ceilings.  To  obtain  the  safe  load 
for  any  thickness,  multiply  the  values  given  for  one  inch  by 
the  thickness  of  the  beam. 

To  obtain  the  required  thickness  for  any  load,  divide  by 
safe  load  given  for  one  inch. 


PIERRE  DUVINAGE, 


253  Broadway,  New  York 

28 


WIRE  WINDOW  OR  DOOR  GUARDS 

Diamond  Mesh  Channel  or  Rod  Frames 


i"  ... 

wire... 

...cost  per  sq.  ft... 

...$  .52 

i"  ... 

...No.  10 

<  < 

...  .64 

...No.  12 

<  < 

{  < 

...  .48 

...No.  10 

<  < 

(  ( 

...  .56 

I#”:. 

...No.  12 

<  < 

...  .40 

<  1 

(  < 

...  -44 

i  y2" ... 

...No.  8 

<  < 

<  ( 

...  .56 

i'A" .. 

3 

<  ( 

...  .64 

2r  ... 

*  < 

...  .40 

2"  .. 

...No.  8 

<  t 

(  C 

...  .52 

2r  ... 

3 

f  t  i 

(( 

...  .56 

If  Hinges  and  Locks  are  required,  add  $1.00  per  guard. 


Discount. 


253  Broadway,  New  York 
29 


PIERRE  DUVINAGE. 


Clean  Out  Doors 


SIZE  or  DOOR  OPENING. 


No. 

Opening 

Price 

10 

8  in. 

wide  6  in.  high 

$1.50 

12 

12  “ 

“  10  “  “ 

2.50 

14 

16  “ 

“  12  “ 

3.50 

15 

20  “ 

“  14  “  “ 

4.50 

18 

16  “ 

“  24  “  “ 

8.00 

19 

24  “ 

“  30  “  “ 

15.00 

20 

24  “ 

“  36  “  “ 

18.00 

PIERRE  DUVINAGE, 

253  Broadway,  New  York 


30 


Trap  Pit  Covers, 
-■i  r 


Size  of  Opening  Price 

12"  x  12"  .  $3.00 

16"  x  16"  .  7.00 

20"  x  20"  .  11.00 

24"  x  24"  .  15.00 

36"  x  36"  .  26.00 


OTHER  SIZES  ON  APPLICATION. 


PIERRE  DUVINAGE, 

253  Broadway,  New  York 


31 


Shutter  Open 


Shutter  Closed 


Dome  Turned  Quarter  Round 

Revolving  Dome  24'  0"  diameter,  weight  about  10  tons, 
operated  by  hand  power,  for  the  Astronomical  Observatory, 
Cornell  University,  Ithaca,  N.  Y. 

PIERRE  DUVINAGE,  253  Broadway,  New  York 

82 


If  you  have  not  found  in  this  little 
booklet  what  you  are  in  the  market 
for,  and  it  is  made  of  iron  or  steel, 
communicate  with  me. 

My  26  years  experience  in  this  line 
is  at  your  service  and  I  know  I  can 
supply  your  wants  and  save  you  time 
and  money,  as  I  give  strict  attention 
and  personal  supervision  to  all  details. 


PIERRE  DUVINAGE,  253  Broadway,  New  York 


7M-2-17. 


Pierre  Duvinage 

253  BROADWAY 
NEW  YORK 


